It was not until Trollope was in his thirties that he began to write. His early novels, written in Ireland, met with little success, but once back in England in the 1850's Trollope's Barsetshire novels firmly established him as a literary success.
Trollope's early Irish novels failed to catch the public's imagination, but they provided the groundwork for his later success.
Once Trollope had established himself as a success, his amazing capacity for writing made him the most published novelist of the era.
Trollope continued to write in to the 1880's, developing his style and even attempting science fiction, but his greatest days were behind him.